A coral reef is a type of biotic reef that develops in tropical waters.
Solid structures of the relief of the seabed.
Today coral reefs suffer two problems: Natural and Anthropogenic (for man)
Coral reefs are suffering the effects of climate change due to human contamination.
The response of these ecosystems to climate change is known as coral bleaching.
Oil spills affect the growth and reproduction systems of coral. This impact is damaged by the substances used after a stroke, and increasing threats and can kill them.

The most impressive Coral Reef in the world: In Australia

The loss of reefs has a significant impact on the economy

especially in regard to fishing and tourism. It also impacts on health, since many of the medicines contain substances of corals.